通过各方面的调查认为,父母吸烟对小儿呼吸道症状有一定影响。 Cameron用电话方式调查了1,000个家庭,了解家庭成员吸烟与最近一周内所患疾病的关系。其结果表明,在19岁以上的患者中,吸烟家庭和非吸烟家庭各占一半;在19岁以下的患者中,吸烟家庭比非吸烟家庭多。 Cameron等人同样用电话方式调查了1,000个家庭,了解吸烟和患病的关系。他们查明,吸烟家庭0～16岁小儿患呼吸道疾病的较非吸烟家庭多。在那些吸烟家庭,有患病小儿的吸烟量比无患病的吸烟量大。 Through various surveys, parents believe that smoking has some impact on pediatric respiratory symptoms. Cameron surveyed 1,000 families by phone to learn about the relationship between smoking in family members and the disease in the last week. The results showed that smoking households and non-smoking households each accounted for half of all patients over the age of 19 years; more patients were smokers than non-smokers among patients under 19 years of age. Cameron et al similarly surveyed 1,000 families by phone to understand the relationship between smoking and illness. They found that smoking families 0-16-year-old children suffering from respiratory diseases more than non-smoking families. In those smokers, sick children smoke more than they do not.